GREAT PLAINS Yield-Pro YP4025A-48TR20, Operator'S Manual

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2019-03-19 Table of Contents Index 411-198M
YP4025A-48TR20 Table of Contents Index Adjustments 80
An adjuster cam sets down pressure individually for
each row unit. This is useful for penetrating hard soil and
planting in tire tracks. For best results always adjust
tractor tires so they are not ahead of 30 inch or 70 cm
rows.
Refer to Figure 79
Use only enough down pressure to cut the seed trench
and maintain proper soil-firming over seed. Excessive
row unit down force will lead to premature wear on row
unit components, uneven seed depth and gauge wheel
slippage.
Refer to Figure 78 (shown at cam setting 2),
Figure 79 and Figure 80
To adjust down pressure, use a 1
1

8
inch (29 mm) open
end wrench or the tool stored under the walkboard.
1. Raise the implement name. Although this adjustment
can be made with the implement name lowered, the
springs will be in tension, and will require more effort.
The extra force required may also damage tools.
2. Install lift cylinder locks.
3. Put tractor in Park and shut it off.
4. Position wrench on the fixed nut near or slightly
forward of vertical.
5. Pull upper spring link back.
6. Move the adjustment cam to the new setting on
the spring adjust bar .
 Do not set all rows higher than notch four. Using high
settings across all rows causes uneven planting.
Individual rows may be set higher if running in tire
tracks.
Figure 78
25AP Series Row Unit
Spring Adjustment
29605
3
5
2
2
Cam Notch Pounds Kilograms
zero (out of notch) Lock-Up & Maintenance
one 235 105
two 260 120
three 295 135
four 355 160
five 415 190
six 475 215
tip Do Not Use
29831
Figure 79
Row Unit Minimum Cam (at 1)
27065
4
6
3
Figure 80
Row Unit Maximum Cam (at 6)
27065
4
5
2
6